Cisco IOS IP Service Level Agreements (SLAs) are a portfolio of technology embedded in most devices that run Cisco IOS software that allows Cisco customers to analyze IPv4 and now IPv6 service levels for IPv6 applications and services, to increase productivity, to lower operational costs, and to reduce the frequency of network outages. IP SLAs uses active traffic monitoring--the generation of traffic in a continuous, reliable, and predictable manner--for measuring network performance.

Cisco IOS IP Service Level Agreements (SLAs) are a portfolio of technology embedded in most devices that run Cisco IOS software that allows Cisco customers to analyze IPv4 and now IPv6 service levels for IPv6 applications and services, to increase productivity, to lower operational costs, and to reduce the frequency of network outages. IP SLAs uses active traffic monitoring--the generation of traffic in a continuous, reliable, and predictable manner--for measuring network performance.

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ipv6 address autconfig

ipv6 address autconfig

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To learn more about IPv6 routing and address configuration, see [http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t2/ipv6/ftipv6c.htm IPv6 for Cisco IOS Software].

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To learn more about IPv6 routing and address configuration, see the [http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/15_1/ipv6_15_1_book.html Cisco IOS IPv6 Configuration Guide].

'''Note: At least one interface with an IPv6 address must be configured before configuring the IPv6 options in IP SLAs.'''

'''Note: At least one interface with an IPv6 address must be configured before configuring the IPv6 options in IP SLAs.'''

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udp-jitter 2001::214:A8FF:FE7A:ED70 5566

udp-jitter 2001::214:A8FF:FE7A:ED70 5566

ip sla schedule 1 start-time now

ip sla schedule 1 start-time now

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==Configuration Examples using SNMP==

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IP SLAs for IPv6 can be configured by SNMP using both CISCO-RTTMON-MIB and CISCO-RTTMON-IP-EXT-MIB together.

Latest revision as of 21:24, 15 November 2010

Cisco IOS IP Service Level Agreements (SLAs) are a portfolio of technology embedded in most devices that run Cisco IOS software that allows Cisco customers to analyze IPv4 and now IPv6 service levels for IPv6 applications and services, to increase productivity, to lower operational costs, and to reduce the frequency of network outages. IP SLAs uses active traffic monitoring--the generation of traffic in a continuous, reliable, and predictable manner--for measuring network performance.

IP SLAs has a large portfolio of operations created originally for IPv4. Today, the following Cisco IOS IP SLAs operations are supported for IPv6:

Internet Control Message Protocol (ICMP) echo operation -- Used to monitor end-to-end response time between a Cisco router and devices using IPv4 or IPv6. ICMP Echo is useful for troubleshooting network connectivity issues, but cannot be trusted for accurate performance measurement.

TCP connect operation -- Used to measure the response time taken to perform a TCP Connect operation between a Cisco router and devices using IPv4 or IPv6. Ideal to verify if a remote port / service is up and running.

User Datagram Protocol (UDP) echo operation -- Used to monitor end-to-end response time between a Cisco router and devices using IPv4 or IPv6.

UDP jitter operation -- Used to analyze round-trip delay, one-way delay, one-way jitter, one-way packet loss, and connectivity in networks that carry UDP traffic in IPv4 or IPv6 networks. Can also proactively monitor VoIP quality levels in your network, allowing you to guarantee VoIP quality levels to your users in IPv4 or IPv6 networks. This is by far the best operation for serious performance measurement.

Before you begin

Verify if the router image supports both IP SLAs and IPv6

First, make sure the version of Cisco IOS and your platform both support IP SLAs for IPv6. To complete this verification, you can use Cisco Feature Navigator. Cisco Feature Navigator is located at the following URL: http://www.cisco.com/go/fn.

Enabling IPv6 Routing and Configuring IPv6 Addressing

By default, IPv6 routing is disabled in the Cisco IOS software. To enable IPv6 routing, you must first enable the forwarding of IPv6 traffic globally on the router and then you must assign IPv6 addresses to individual interfaces in the router.

To enable the forwarding of IPv6 traffic globally on the router, use the following command in global configuration mode:

Router(config)# ipv6 unicast-routing

The following example shows how to configure an IPv6 address on an interface. This example starts in global configuration mode.

Additional Notes and Caveats

Performance numbers might be slightly less accurate with IPv6 tests, primarily because for the moment the IPv4 microseconds timestamps cannot be used for IPv6. This problem affects both the sender and responder. CSCtd50484 and CSCte00862 are tracking these issues and we are working on it.